.article-extend {
  overflow: hidden;
  margin-bottom: 1em;

  .extend-key,
  .extend-value {
    float: left;
    width: 41%;
    margin-right: 3%;
  }

  .extend-value {
  	margin-right: 0;
  }
  
  .extend-del {
    float: right;
  }
}